Toggle-squeeze hemostat forceps



Feb. 14, 1928. 1,659,112

0; M. LITTLEJOHN TOGGLE SQUEEZE HEMOSTAT FORQEP S Filed May 12, 1927 INVENTOR I [1% Ztfffgyofifl.

BY l I ATTORNEY I Patented Feb. 14, 192 i p a uN- 'rao STATES I 1,659,112 PA ENT- Q FIC DANA n mmrmofin, or PANA, ILLINOIS.

,TOGGLE-SQUEEZE HEMOSTAT FoItcEPs.

Application filed May 12, 1927. Serial No. 19am.

geon when in use, and in which the said clamping movement effecting parts include toggle devices so constructed and arranged that an unusually great pressure or clamping action is attained from a given force application.

lVith the above and other objects in view that will hereinafter appear, the invention further resides in the novel details-of construction, combination and arrangement of parts, all ofwhich will be first fully described, then be particularly pointed out in the appended claims, reference being had to the accompanying drawing, in which A Figure 1 is a perspective view of the forceps in an open or unclamped position.

Figure 2 is a perspective view of the forceps reversely positioned and closed or clamped.

Figure 3 is a cross section taken on the line 33' on Figure 2. Y

In the practical developmentof the invention I provide a fixed shank or main body 1 which is bent atone end at an angle of 90 degrees to form a fixed clamp jaw 2, has the face thereof whi clris presented in the y direction of bend of the jaw 2 dove-tail grooved as at 3, and has its remaining end,

through which the groove 3 passes, provided with pivot ears 4 one disposed at each side of the said groove. i j

A slide shank 5 is slidable in the grooveway 3 and has one end thereof bent at an angle of QO'degrees to form a movable clamp jaw 6. A pair of handle members 7 are provided and'are pivoted one to each ear 4 and equipped at their free ends with finger receiving eyes which lie in the plane of movement of the saidmembers which plane, it will be observed, is horizontal and normal to the plane of movement of the movable jaw 6. It will also be observed by reference to Figure 2 of the drawing, that the handle members 7, when closed, form a longitudinal continuation of the shank or body 1, formingv a very compact device, which, by reasonalso of the manner of positioning the said'handle members and eyes, will lie perfectly fiat and out of the way of the surgeon when in actual use. t r

The shank 5 is extended beyond the grooveway 3 a distance between thehandle members 7, as indicated at 8, and to this extendediend the toggle links 9 are pivoted as at 10, the remaining ends of the said links being pivoted as at 11 to the'handle members 7 closely adj acent the eyes thereof. By reason of the provision and arrangement of 7 the toggle links, a given force applied to the handle membersthrough their eyes is compounded by said links anda much greater pressure is applied through the shank 5 and jaw 6 than could be applied by a like force application to the arms of the common scis-r sor type of forceps. I

Beyond the link pivots 11 and closely adjacent the eyes, the handle members are equipped respectively with a notched sector 12 and a detent lug .13 adapted to coact to' lock the handlemembers to a jaw clamped position. 7 k I The toggle squeeze arrangement in my device permits of a much greater pressure than 'may be'attained in common types of such instruments whenthe'same' force is exerted in v manipulation thereof, and as the handles are opened and closed on an angle of 90 degrees with the jaws and not on the same planewith them, the handles'are therefore permitted to lie flat, which aidsconsiderably in the convenience'of abdominal operations,

because the handles do not stick up in the way, and provide'other advantages that naturally follow in the use of an instrument of this kind.

From the foregoing description, taken in connection with the accompanying drawing,

it is thought that the novel details of construction, the manner of use and'the advantages of my invention, will be readily apparent to those skilled in the art to which it relates. 1

,What I claim is:

1. Forceps of the character stated compris- 1 ing a narrow body having slightly diverging width defining edges a fixed jaw, a movable jaw, handle members, and'toggle links connecting the movable jaw and the handle members, said {handle members collectively forming a longitudinally alighing extension of the bodywhen closed, and said handle members having finger receiving eyes at their ends disposed in a plane normal to the plane of movement of the movable jaw all of said parts being arranged to remain Within the lines defining the thickness of the body at all times.

:2. l leemostat forceps comprising a narrovv' body having slightly diverging Widthdefining edges and bent at one end to form a fixed jaw positioned at right angles to said body and having a clamp face directed to- Ward the other end ofisaid body, said body also having a longitudinal groove therein extending through said other end thereof, a slide shank slidable in and extending at one end beyond the groove and having its outside face flush with the corresponding face of the said bodyand having a clamp jaw bent at, right angles therefrom at its other end to provide a movable clamp jaw in opposition to said clamp vface, apair'of handle members each having a finger receiving eye at one end and each being pivoted at its remaining end to the proximal end of said body at one side of said groove to operate in a plane normal to the plane of movement of the clamp jaw, toggle links pivoted to the extended end of the slide shank and to the handle members adjacent the eyes, and said toggle link-and'handl'e members being so cooperatively arranged as to lie Wholly Within the thickness defining lines of the body at all times, and means to lock the handles at adjusted positions.

DANA M. LITTLEJOI-IN. 

